"goose"
Does the name Tikka sound familiar? All your choices are good choices, but what the folks are trying to say is, that the most bang for your buck will be a Tikka. I just got one for my son, a T3, 7mm Rem Mag, for $589 from the sporting goods store here in town. Blued, synthetic stock, rings, etc. You get an adjustable trigger, a Sako barrel and one of the smoothest actions you've ever seen. Oh yes, and out of the box they are one of the best shootin' rifles you can get! I believe that fits the "under $600" stipulation you put on it. You can't go wrong with a Tikka!
Good luck, and enjoy!!!!!
Jim